% Copyright 2018 Google LLC
%
% Use of this source code is governed by an MIT-style
% license that can be found in the LICENSE file or at
% https://opensource.org/licenses/MIT.

\documentclass{article}

\usepackage{amsmath}
\usepackage{amssymb}

\begin{document}
What letters are still free for me to use?
\begin{description}
   \item[$A$] adversary
   \item[$C$] ciphertext
   \item[$\mathcal{D}$] decrypt
   \item[$\mathcal{E}$] encrypt
   \item[$E$] block cipher
   \item[$F$] random function
   \item[$g$] random group element used to state almost-difference-universal property
   \item[$H$] hash
   \item[$i$] index
   \item[$j$] index
   \item[$K$] key
   \item[$\mathcal{L}$] left
   \item[$L$] left
   \item[$l$] length
   \item[$M$] middle
   \item[$m$] message
   \item[$n$] 128
   \item[$\mathcal{N}$] space of possible nonces
   \item[$P$] plaintext
   \item[$\pi$] random permutation
   \item[$q$] number of queries
   \item[$r$] NH rounds
   \item[$R$] right
   \item[$S$] Stream cipher
   \item[$s$] NH stride
   \item[$T$] tweak
   \item[$\mathcal{T}$] space of possible tweaks
   \item[$t$] execution time
   \item[$u$] NH chunking
   \item[$v$] padding length
   \item[$w$] NH word size
   \item[$\xi$]
   \item[$\kappa$]
   \item[$\eta$]
\end{description}

\end{document}
